Hi BEPPE,
Thanks for your interest in Syncfusion Components.
Can you let us know you feature requirements to request the Report Viewer to replaces the Microsoft Report Viewer in Windows Forms. It would be helpful to analyze your feature requirement and consider to log the feature request for Windows Forms control.
As of now, our recommendation to use Report Viewer WPF component along with Element Host for Windows Forms platform as like below example.
Regards,
Vinoth S.